Harris County Weather in May
Average highs run from 82°F on May 1 to 88°F on May 31, and lows from 58°F to 67°F. Normal precipitation for the month is 3.24 in over about 8 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 85°F
- Average low
- 63°F
- Precipitation
- 3.24 in
- Record high
- 98°FMay 30, 2006
- Record low
- 33°FMay 1, 1999
- Chance of a freeze
- 0%
- Days of 90°F or more
- 6.1
- Daylight
- 13 h 29 min to 14 h 09 min
- Cloud cover
- 51%
- Humidity
- 74%
- Dew point
- 61°F
- Wind
- 4.0 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 82°F | 58°F | 91°F 2012 | 33°F 1999 | 25% | 0% |
| May 2 | 82°F | 59°F | 89°F 2012 | 43°F 1999 | 25% | 0% |
| May 3 | 82°F | 59°F | 88°F 2010 | 43°F 2023 | 25% | 0% |
| May 4 | 83°F | 59°F | 86°F 2006 | 42°F 2023 | 24% | 0% |
| May 5 | 83°F | 60°F | 88°F 2002 | 43°F 2026 | 24% | 0% |
| May 6 | 83°F | 60°F | 89°F 2012 | 43°F 2013 | 24% | 0% |
| May 7 | 83°F | 60°F | 88°F 2010 | 45°F 2026 | 24% | 0% |
| May 8 | 84°F | 61°F | 86°F 2002 | 43°F 2026 | 25% | 0% |
| May 9 | 84°F | 61°F | 90°F 2004 | 44°F 2021 | 25% | 0% |
| May 10 | 84°F | 61°F | 89°F 2002 | 43°F 2020 | 25% | 0% |
| May 11 | 84°F | 62°F | 91°F 2011 | 48°F 2016 | 25% | 0% |
| May 12 | 84°F | 62°F | 92°F 2011 | 48°F 2020 | 25% | 0% |
| May 13 | 85°F | 62°F | 92°F 2011 | 45°F 2013 | 25% | 0% |
| May 14 | 85°F | 63°F | 91°F 1998 | 46°F 2013 | 26% | 0% |
| May 15 | 85°F | 63°F | 94°F 1998 | 47°F 2006 | 26% | 0% |
| May 16 | 85°F | 63°F | 94°F 1998 | 41°F 2026 | 26% | 0% |
| May 17 | 86°F | 64°F | 91°F 2017 | 41°F 2026 | 26% | 0% |
| May 18 | 86°F | 64°F | 92°F 2017 | 42°F 2011 | 27% | 0% |
| May 19 | 86°F | 64°F | 92°F 1998 | 46°F 2002 | 27% | 0% |
| May 20 | 86°F | 64°F | 92°F 1998 | 46°F 2002 | 27% | 0% |
| May 21 | 86°F | 65°F | 93°F 1998 | 48°F 2007 | 27% | 0% |
| May 22 | 86°F | 65°F | 93°F 1998 | 47°F 2002 | 28% | 0% |
| May 23 | 87°F | 65°F | 93°F 1998 | 48°F 2002 | 28% | 0% |
| May 24 | 87°F | 66°F | 92°F 2010 | 48°F 2007 | 28% | 0% |
| May 25 | 87°F | 66°F | 93°F 2019 | 53°F 1999 | 29% | 0% |
| May 26 | 87°F | 66°F | 94°F 2019 | 51°F 2005 | 29% | 0% |
| May 27 | 87°F | 66°F | 95°F 2019 | 47°F 2024 | 29% | 0% |
| May 28 | 88°F | 67°F | 94°F 2012 | 51°F 2005 | 29% | 0% |
| May 29 | 88°F | 67°F | 92°F 1998 | 43°F 1999 | 30% | 0% |
| May 30 | 88°F | 67°F | 98°F 2006 | 53°F 2023 | 30% | 0% |
| May 31 | 88°F | 67°F | 94°F 2006 | 52°F 2018 | 30% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:52 AM, sunset 8:21 PM
- May 31
- sunrise 6:33 AM, sunset 8:42 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093842 (Columbus Metro AP), public domain. Records: NOAA GHCN-Daily, station USC00096148, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.